Beat the eggs and sugar until fluffy, this will take a few minutes.
In a large bowl, add the dry ingredients together: lemon zest, flour, baking powder and salt. Gently fold into the egg mixture.
Use two tablespoons to scoop the batter onto a baking sheet lined with parchment paper (a silicone mat works fine as well). Always use a good full tablespoon per egg cake. Make sure they have plenty of space on your baking tray; they will expand quite a bit and rise slightly.
Bake the egg cakes at 180°C/350℉ (convention oven) for about 10 minutes.
The egg cakes can still look pale as long as the edges start to turn golden brown, that's fine. If you bake them too long, they will become drier and more brittle.
How to store
Store in an airtight container at room temperature for 3-4 days.